Plenish is a term used to describe the process of equipping something with the necessary supplies or materials. It is often used in the context of providing a person or organization with the resources they need to complete a task or project. The term 'plenish' comes from the Latin word 'plenus, ' which means 'FULL.' In the context of the crossword puzzle, the term 'plenish' is used to describe the process of equipping something with the necessary supplies or materials.